-98.04% is the change from 662 to 13
Calculation steps:
[( 13 - 662 ) ÷ 662] x 100 = -98.04%
Formula
Percentage change = [(13 - 662) / 662] x 100
Subtract the new number by the original number
13 - 662 = -649
-649 ÷ 662 = -0.9803625377643505
-0.9803625377643505 x 100 = -98.04%